30-point rule

The 30-point rule is a psychological theory based on the usage of the intelligence quotient. Essentially it derives that if an individual differs in IQ from another person by over 30 points, they will have difficulty understanding each other. This theory is usually attributed to psychologist Leta Stetter Hollingworth. This though is countered by the belief that basic communication such as small talk, customer service, and meaningless conversation are possible even with the 30 point difference. The issues occurs in higher level conversation and higher level interests.<ref name"auto1"/> An example given is a person is interested in professional wrestling while another in interested in history re-enactment.<ref name"auto1"/> Christopher Langan has spoken to his difficulties communicating with others, which he attributes to the 30 point rule.<ref name="auto"/>